Investigation of magnetic fluids by ultrasonic and magnetic methods |
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Authors: | Skumiel Hornowski Jozefczak |
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Institution: | Institute of Acoustics, Adam Mickiewicz University, Poznan, Poland. skumiel@main.amu.edu.pl |
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Abstract: | The influence of magnetic field on the acoustic and magnetic properties of magnetic liquids is discussed. By fitting the curve of Taketomi's theory to the experimental data of the anisotropy of ultrasonic attenuation, the values of quantities describing the structure of magnetic liquids have been determined. Moreover, the dependence of magnetic susceptibility on frequency has been measured. It shows that two processes of magnetization, based on the mechanisms proposed by Brown and Neel, contribute to the magnetization of the magnetic liquid. |
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